- a preview of a motion picture, often shown in addition to an announced film, in order to observe the reaction of the audience.
Origin of sneak preview
- a screening of a film at an unexpected time to test audience reaction before its release
Idioms and Phrases with sneak preview
An advance showing of something, as in It was supposed to be bad luck but she gave the bridegroom a sneak preview of her wedding gown. This expression originated in the 1930s for a single public showing of a motion picture before its general release, and in succeeding decades was transferred to other undertakings.